Question

what is the of valeaney
oxygen and potassium? explain ​

Answer 1

$\huge\tt\underline\red{Answer}$

• Oxygen has 8 valence electrons. Hence it belongs to group 6 of the periodic table. This means it has a total of 2 electrons in the first shell (or K shell), and 6 electrons in the first shell (or K shell). Hence it has a valency of 6

Answer 2

What is the valency of oxygen?

You have to be careful with terminology here. Oxygen (the atom, not O2 the molecule) has 6 VALANCE (outer shell) electrons. To complete a stable octet it requires a further two. In this case, we use the term VALENCY, oxygen has a valency of -2 (minus 2) because it can acquire 2 elections. However, be aware that for brevity chemists often drop the minus sign completely and simply state that oxygen has a valency of 2. In practical terms, it’s the number of paired election bonds (covalent bonds) that an atom of that element can form with another element. You can also think of it as the number of hydrogen atoms the element can covalently bond with (hydrogen has a valency of +1 because it can donate one election). There are a number of caveats to this simple explanation, but those are the basics. With the similarity in terminology, i.e., valence vs valency, it is unsurprising students get confused.

#Hope you have satisfied with this answer.